Dopamine D1 Receptor Gene
Dopamine D2 Receptor Gene
Dopamine D3 Receptor Gene
Dopamine D4 Receptor Gene
Dopamine Transporter Gene
Serotonin 2a Receptor Gene
Serotonin Transporter Gene
Mu-opiate Receptor Gene
GABA –B3Receptor Gene
PENK Gene
Mono-Amine –Oxidase A Gene
Catecholamine –Methyl-Transferase Gene
Cytochrome P450 Gene
Table 1: Proposed Genetic Addiction Risk Score (GARS).